[Pacemaker] Stopping/restarting pacemaker without stopping resources?

Andrew Beekhof andrew at beekhof.net
Fri Oct 24 01:17:03 EDT 2014

> On 16 Oct 2014, at 9:31 pm, Andrei Borzenkov <arvidjaar at gmail.com> wrote:
> The primary goal is to transparently update software in cluster. I
> just did HA suite update using simple RPM and observed that RPM
> attempts to restart stack (rcopenais try-restart). So
> a) if it worked, it would mean resources had been migrated from this
> node - interruption
> b) it did not work - apparently new versions of installed utils were
> incompatible with running pacemaker so request to shutdown crm fails
> and openais hung forever.
> The usual workflow with one cluster products I worked before was -
> stop cluster processes without stopping resources; update; restart
> cluster processes. They would detect that resources are started and
> return to the same state as before stopping. Is something like this
> possible with pacemaker?

absolutely.  this should be of some help:


> -andrei
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